Catalysis – Page 11 – TechConnect Briefs

Surface properties of amorphous nanoporous GeS2

Ori G., Celino M-, Massobrio C., Coasne B., UMI CNRS / Massachusetts Institute of Technology, US

Amorphous nanoporous chalcogenides (chalcogels) represent a novel class of materials with promising properties for applications as catalysts, gas separation, and heavy metal environmental remediation. In the present work, first-principles molecular dynamics (FPMD) simulations are first [...]

Flower-like TiO2 Nanostructures: Synthesis,Characterization and Photocatalytic Properties

Li Y., Liu E., Fan J., Fan X., Hu X., Liu E., Fan J., Fan X., Wu H., Ma Y., Tang C., Northwest University, CN

In this paper three-dimensional (3D) titania nanostructures assembled with rutile nanorods have been fabricated via a hydrothermal reaction route. The effects of preparation parameters including the reaction temperatures and the reactant concentrations, on the microstructure, [...]

High photocatalytic activity of hydrogen production from water over Fe doped and Ag deposited anatase TiO2 nanotube arrays

Fan J., Fan X., Fan J., Fan X., Hu X., Liu E., Kang L., Tang C., Wu H., Li Y., Liu E., Ma Y., Northwest University, CN

Recently, studies revealed that noble metal (Au, Ag, Pd) nanoparticles can improve the photoresponse property of TiO2 in the visible region based on the localized surface plasmon resonance (LSPR) effect, and thus enhance the activity [...]

A hierarchical carbon nanofiber-In2S3 photocatalyst with well controlled nanostructures for highly efficient hydrogen production under visible light

Gao P., Li A., Liu Z., Tai M., Liu Z., Sun D.D., Nanyang Technological University, SG

Hydrogen as a renewable clean energy has attracted a lot attention because of its high heat conversion efficiency and zero carbon emission, while synthesizing highly efficient material for photocatalytic hydrogen production under solar light remains [...]

Application of alumina-based nanogold catalysts in gas mask and CO2 laser

Qi C., Su H., Sun X., Guan R., Lin H., Sun X., Zheng Y., An L., Yantai Univeristy, CN

We have found that Au nanoparticles on Al2O3 (a popular commercially available support material) show surprisingly high activities for CO oxidation when properly prepared [6-11]. Our proprietary catalyst, Au deposited on a ferrite-modified alumina prepared [...]

Microwave-assisted hydrothermal synthesis of Cu-doped titanate nanotubes: photoluminescence and photocatalysis properties

Manfroi D.C., Andrade L.P., Cavalheiro A.A., Jos A.A., Teixeira G.F., Perazolli L.A., Varela J.A., Zaghete M.A., Universidade Estadual Paulista, BR

Alkali titanates have been intensively investigated mostly because of their properties. And the interest for transition metal doping of 1D titanate nanostructures is enormous, especially copper. In the present work we report the synthesis of [...]

Development of a hydroprocessing catalyst containing Boron and Nano-boron compounds

Yonel-Gumruk E., Meric Kartal Berker A., Özcan O., Nilgün Akin A., Turkish Petroleum Refineries Corporation, US

Hydroprocessing is a refinery process of catalytic cracking and hydrogenation of petroleum in order to convert low value heavy hydrocarbons into high value light hydrocarbons and to remove sulphur, nitrogen, oxygen and metals to the [...]

Uniformly Distributed Metal Nano-particles in Various Sized Porous Catalytic Supports by NPP Process

Lee C., Lee J-H., Lee C., Lee J-H., Kang B.K., Kaji H., Hayashi M., Koh S.K., GL Materials, KR

2~10 nm sized metal nano-particles were uniformly loaded in porous activated carbon (AC) support and 10~100 nm sized metal nano-particles were completely covered on the surfaces of air flow channels of porous ceramic monolith. Metal [...]

Voltammetric and Impedance studies of Phenols and Its Derivatives at Carbon Nanotubes/Prussian Blue Films Platinum Modified Electrode

Adekunle A.S., Arotiba O.A., Agboola B.O., Maxakato N.W., Mamba B.B., Ebenso E.E., North-West University, ZA

Phenols and the chlorinated and alkylated derivatives are classified as priority pollutants due to the health risk associated with their toxicity. Due to their constant presence in industrial waste and consequently their carcinogenic risk for [...]

Silicon and nickel nanoparticle size and morphology as a key to control the particle photoluminescence and photochemistry

Tvauri I.V., Parkhomenko Yu.N., Khubezhov S.A., Kaloeva A.G., Demeev Z.S., Bzaev A.O., Bliev A.P., Sozanov V.G., Magkoev T.T., University of North Ossetia, RU

The work studies the structural and photoinduced properties of silicon nanoparticles (NanoSi) obtained by plasmachemical and electrolytic techniques and the nickel particles deposited on aluminum oxide film in ultra-high vacuum.